Sheet structure



Nov. 15, 1927-.

1,649,453 E. I. DODDS SHEET STRUCTURE Filed Dec. 29. 1924 i gwuwntoz j, MM

Patented Nov. 15, 1927.

UNITED STATES 1,649,453 PATENT OFFICE.

Renan I. nonne, or CENTRAL VALLEY, 'New YRR, AssisuOR 'ro UNION attirer. PRODUCTS COMPANY, or' CHICAGO, rLLINois, A CORPORATION or DELAWARE.

i SHEETy STRUCTURE.

Application mea December 29, 1924. serial No. 758,664.

rIhis invention relates to improvements in sheet structures and has particular reference to such as may be employed in car construction, one object of the invention being to provide a sheet metal structure suitable for use as ends, side sheets, fioor sheets, door sheets, roof sheets or other car parts, which shall be so corrugated as to insure adequate strength and Stability. j y

A further obj ect is to corrugate a sheet for the purpose stated, (whether the sheet` be oil metal or other material) ,in such manner that v bulging of the sheet shall be avoided and so that the sheet, as a whole, willretain it gen @rally fiat form. p

A further obj ect is to provide a sheet metal or other sheet structure which shall be so corrugated that itI will adequately withstand strains to which it may be subjected, and so that warping of the sheet will be obviated.

A further Object is to provide a metal sheet which shall be so corrugated that the metal of the sheet will not be. materially strained or caused to exceed its elastic limit during the operation of corrugating the sheet. n

With these and other objects in view, the invention consists in Certain novel features as hereinafter set forth and pointed out in the claims.

In the accompanying drawings:

Fig. 1 shows a sheet embodying invention.

Fig. 2 is a section on line 2 2 of Fig. 1.

Fig. 3 is the same as Fig. 2 and shows the corrugations deepest adjacent the center of the sheet.

Figs. 4 to 7 inclusive, show modified forms of the invention.

In the drawings, I have shown my improvements as applied to a sheet metal car end,-but they may be applied to car side, floor, roof or door structures. and may be utilized in the construction of other Car arts. l

The metallic sheet 1 is reinforced by having a plurality of corrugations or embossments formed therein so interwoven and positioned relative to the center and edges or sides of the sheet structure as to materially increase the strength of the sheet to resist buckling, warping and load stresses. The corrugations are of a general Spiral form and are made circular or with straight connected portions as desired and to suit the shapev ofthe structure or device to be reinforced. The sides or edges of the sheet may be provided with flanges 2 or reinforced in any other convenient manner. Y

Fig. 4 shows two interwovenspiral corrugations 20-21 as Vused toy reinforce the end wall of a railway box car. Figs. 1 and 2 showv two interwoven corrugations 3'-i and 9-10 of general spiral form having straight connected portions which are substantially` parallel to the sides of thesheet. Various combinations of the structuresl shown in Figs. 1 and 4t could be devised and still come within the scope of thisinvention. The cor-y rugations may be of uniform depth from end to end or they may be made of diminishing depths from the central portion of the sheet to the side edges thereof, as shown in Fig. 3, or the deeper' portions of they corrugations y may be located at the edge portion instead of at the central portion of the sheet.

Fig. 1 shows two corrugations each having their inner ends positioned nearzthe center of the sheet and each split or divided y,to form two parallelportions 3-4 or 9-10. The outer ends yof these split portions terminate adjacent different corners of the sheet.

Fig. 3.k showsv lthe corrugations being deepestadjacent the `center of the sheet and diminishing in depth toward the edges of the sheet.

Fig; 5 shows the invention usedA to reine force an oblong sheet such as would be used for an end wall of a gondola car or a railway car hopper door. These corrugations 13-14 are of general spiral form.

In Fig. 6, a plurality of angularly formed i corrugations 16 are shown and disconnected from each other but, as a whole, provide a generally spiral formation. In Fig. 7 two spiral corrugations 17 and 18 are shown and these are disconnected from each other at the central portion of the sheet.

general spiral form, the inner ends of said corrugations being located near the center of the sheetv and the outer ends of said corrugations being located near the edges of the sheet and adjacent opposite corners thereof.

3. A metallic sheet having a plurality of interwoven corrugations formed therein of general spiral form, the inner ends of said corrugations being located near the center of the sheet and the outer ends of said corrugations being located near the edges of the sheet, said corrugations being deepest adjacent the center of the sheet.

4. A metallic sheet having a plurality of interwoven corrugations formed therein of general spiral form, the inner ends of said corrugations being located near the center of the sheet and the outer ends of said corrugations being located near the edges of the sheet, said corrugations being deepest adjacent the center of the sheet and decreasing in depth toward the edges thereof.

5. A metallic sheet having a plurality of interwoven corrugations formed therein of general spiral forni, the inner ends of said corrugations being located near the center of the sheet and the outer ends of said corrugations being located near the edges of the sheet and adjacent opposite corners thereof, said corrugations being deepest adjacent the center of the sheet and decreasing in depth toward the edges thereof.

6.v A metallic sheet having a plurality of interwoven corrugations formed therein of general spiral forni including straight portions substantially parallel to the edges of the sheet, the inner ends of said corrugations being located near the center of the sheet and the outer ends of said corrugations being located near the edges of the sheet.

7. A metallic sheet having a plurality of interwovencorrugations formed therein of general spiral form including straight por'- tions substantially parallel to the edges of the sheet, the inner ends of said corrugations being located near the center of the sheet and the outer ends of said corrugations being located near the edges of the sheet and adj aeent opposite corners thereof.

8. A metallic sheet having a plurality of interwoven corrugations formed therein of general spiral form including .straight portions substantially parallel to the edges of the sheet, the inner ends of said corrugations being located near the center of the sheet and the outer ends of said corrugations be-` ing located near the edges of the she-et, said corrugations being deepest adjacent the center of the sheet.

9. A metallic sheet having a plurality of interwoven corrugations formed therein of general spiral form including straight por-` tions substantially parallel to the edges Vof the sheet, the inner ends of said corrugations being located near the center of the sheet and the outer ends of said corrugations being located near the edges of the sheet, said corrugations being deepest adjacent thev center of th-e sheet and decreasing in depth toward the edges thereof.

l0. A metallic sheet having a plurality of interwoven corrugations formed therein of general spiral form including straight portionsV substantially parallel to the edges of the sheet, the inner ends of'said corrugations being located near the center of the sheet and thel outer ends of said corrugations being located near the -edges of the Sheet and adjacent opposite corners thereof, said corrugations being deepest adjacent the center of the sheet and decreasing in depth toward the edges thereof.

In testimony whereof, I have signed this specification.

` ETI-IAN I. D'ODDS. 

